/* CSS Variables */
:root {
  /* Colors */
  --primary-blue: #4A90E2;
  --primary-blue-hover: #357ABD;
  --bg-light: #F5F7FA;
  --bg-white: #FFFFFF;
  --text-dark: #2C3E50;
  --text-medium: #5A6C7D;
  --text-light: #8B9AA8;
  --border-light: #E1E8ED;
  --success-green: #4CAF50;
  --error-red: #E74C3C;
  
  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
  --font-size-base: 16px;
  --font-size-small: 14px;
  --font-size-large: 18px;
  --font-size-h1: 48px;
  --font-size-h2: 36px;
  --font-size-h3: 28px;
  --font-size-h4: 24px;
  
  /* Spacing */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-xxl: 64px;
  
  /* Layout */
  --max-width: 1200px;
  --border-radius: 8px;
  --border-radius-large: 12px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

/* Dark Theme */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-light: #1A1A2E;
    --bg-white: #16213E;
    --text-dark: #E8ECF1;
    --text-medium: #B0B8C4;
    --text-light: #8892A0;
    --border-light: #2C3A4A;
    --primary-blue: #5DA3F0;
    --primary-blue-hover: #7AB6F5;
  }

  .comparison-table .highlight {
    background-color: #1E2E48;
  }
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  color: var(--text-dark);
  background-color: var(--bg-light);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-h1);
}

h2 {
  font-size: var(--font-size-h2);
}

h3 {
  font-size: var(--font-size-h3);
}

h4 {
  font-size: var(--font-size-h4);
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--text-medium);
}

a {
  color: var(--primary-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-blue-hover);
}

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Header */
.header {
  background-color: var(--bg-white);
  border-bottom: 1px solid var(--border-light);
  padding: var(--spacing-sm) 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-large);
  font-weight: 700;
  color: var(--text-dark);
}

.logo-icon {
  width: 32px;
  height: 32px;
  color: var(--primary-blue);
  object-fit: contain;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav-links {
  display: flex;
  gap: var(--spacing-md);
  list-style: none;
}

.nav-links a {
  color: var(--text-medium);
  font-size: var(--font-size-base);
  transition: color var(--transition-fast);
}

.nav-links a:hover {
  color: var(--text-dark);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 24px;
  font-size: var(--font-size-base);
  font-weight: 600;
  text-align: center;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background-color: var(--primary-blue);
  color: var(--bg-white);
}

.btn-primary:hover {
  background-color: var(--primary-blue-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(74, 144, 226, 0.3);
}

.btn-large {
  padding: 16px 32px;
  font-size: var(--font-size-large);
}

/* Hero Section */
.hero {
  background-color: var(--bg-white);
  padding: var(--spacing-xxl) 0;
  overflow-x: visible;
}

.hero .container {
  overflow-x: visible;
}

.hero-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.hero-text {
  flex: 0 0 33%;
  min-width: 0;
}

.hero-image {
  flex: 0 0 92%;
  min-width: 0;
}

.hero-text h1 {
  margin-bottom: var(--spacing-sm);
}

.hero-subtitle {
  font-size: var(--font-size-large);
  color: var(--text-medium);
  margin-bottom: var(--spacing-sm);
}

.hero-tagline {
  font-size: var(--font-size-base);
  color: var(--text-light);
  margin-bottom: var(--spacing-lg);
}

.hero-cta {
  margin-bottom: var(--spacing-sm);
}

.mac-app-store-badge {
  display: inline-block;
  line-height: 0;
}

.mac-app-store-badge img {
  height: 48px;
  width: auto;
  display: block;
}

.cta-section .mac-app-store-badge img {
  height: 44px;
}

.hero-meta {
  font-size: var(--font-size-small);
  color: var(--text-light);
}

.hero-image {
  position: relative;
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: var(--border-radius-large);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bg-white);
  font-size: var(--font-size-large);
}

/* Section */
.section {
  padding: var(--spacing-xxl) 0;
}

.section--wide {
  padding: calc(var(--spacing-xxl) * 4 / 3) 0;
}

.section--wide .container {
  max-width: 1600px;
}

/* Slider in wide section: steps and images scale with container, no vw gaps */
.section--wide .step {
  min-width: 100%;
}


.section-title {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.section-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.section-content > *:first-child {
  flex: 0 0 33%;
  min-width: 0;
}

.section-content > *:last-child {
  flex: 0 0 92%;
  min-width: 0;
}

/* Feature List */
.feature-list {
  list-style: none;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-large);
  color: var(--text-dark);
}

.feature-list li::before {
  content: "✓";
  color: var(--success-green);
  font-weight: bold;
  font-size: 24px;
}

/* Steps Section – horizontal slider */
.steps-wrap {
  position: relative;
  margin-top: var(--spacing-xl);
}

.slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.6);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
  color: var(--text-dark);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}

.slider-btn:hover {
  background: rgba(74, 144, 226, 0.85);
  color: var(--bg-white);
  box-shadow: 0 4px 16px rgba(74, 144, 226, 0.4);
}

.slider-btn:active {
  transform: translateY(-50%) scale(0.98);
}

.slider-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

.slider-arrow {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.slider-prev {
  left: 16px;
}

.slider-next {
  right: 16px;
}

.steps {
  display: flex;
  flex-direction: row;
  gap: 0;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  padding: 0;
  margin-left: 0;
  margin-right: 0;
}

.step {
  flex: 0 0 auto;
  min-width: 85vw;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  text-align: center;
  padding: 0;
}

.step-number {
  width: 48px;
  height: 48px;
  background-color: var(--primary-blue);
  color: var(--bg-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-h4);
  font-weight: bold;
  margin: 0 auto 8px;
}

.step-title {
  font-size: var(--font-size-large);
  font-weight: 600;
  margin: 0 0 8px;
}

.step-image {
  position: relative;
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: var(--border-radius);
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bg-white);
  overflow: hidden;
}

/* Step images in slider: also half viewport width */

/* Comparison Table */
.comparison-table {
  max-width: 800px;
  margin: var(--spacing-xl) auto;
  background-color: var(--bg-white);
  border-radius: var(--border-radius-large);
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.comparison-table table {
  width: 100%;
  border-collapse: collapse;
}

.comparison-table th,
.comparison-table td {
  padding: var(--spacing-md);
  text-align: center;
  border-bottom: 1px solid var(--border-light);
}

.comparison-table th {
  background-color: var(--bg-light);
  font-weight: 600;
  color: var(--text-dark);
}

.comparison-table td:first-child {
  text-align: left;
  font-weight: 500;
}

.comparison-table .highlight {
  background-color: #0095ff4f;
}

.check {
  color: var(--success-green);
  font-size: 24px;
}

.cross {
  color: var(--error-red);
  font-size: 24px;
}

/* CTA Section */
.cta-section {
  background-color: var(--bg-white);
  text-align: center;
  padding: var(--spacing-xxl) 0;
}

.cta-section h2 {
  margin-bottom: var(--spacing-md);
}

.cta-section p {
  font-size: var(--font-size-large);
  margin-bottom: var(--spacing-lg);
}

/* Footer */
.footer {
  background-color: var(--bg-white);
  border-top: 1px solid var(--border-light);
  padding: var(--spacing-lg) 0;
  margin-top: var(--spacing-xxl);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: var(--spacing-md);
  list-style: none;
}

.footer-links a {
  color: var(--text-medium);
  font-size: var(--font-size-small);
}

.footer-copyright {
  color: var(--text-light);
  font-size: var(--font-size-small);
}

/* Media Placeholder */
.media-placeholder {
  position: relative;
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: var(--border-radius);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bg-white);
  font-size: var(--font-size-base);
  text-align: center;
  padding: var(--spacing-md);
}

.product-img {
  max-width: 100%;
  height: auto;
}

/* Scale image to fit container, nothing cut off */
.hero-image .product-img,
.media-placeholder .product-img,
.section-content .media-placeholder .product-img,
.step-image .product-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: contain;
}

/* Content Page Styles */
.content-page {
  background-color: var(--bg-white);
  max-width: 800px;
  margin: var(--spacing-xl) auto;
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-large);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.content-page h1 {
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--border-light);
}

.content-page h2 {
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.content-page p {
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
}

/* Product Card */
.product-card {
  background-color: var(--bg-white);
  border-radius: var(--border-radius-large);
  padding: var(--spacing-xl);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.product-card h2 {
  margin-bottom: var(--spacing-sm);
}

.product-card p {
  margin-bottom: var(--spacing-md);
}

/* Responsive Design - Desktop First */
@media (max-width: 1024px) {
  :root {
    --font-size-h1: 40px;
    --font-size-h2: 32px;
    --font-size-h3: 24px;
  }
  
  .hero-content {
    flex-direction: column;
    gap: var(--spacing-lg);
  }

  .hero-text,
  .hero-image {
    flex: 0 0 auto;
  }

  .section-content {
    flex-direction: column;
    gap: var(--spacing-lg);
  }

  .section-content > *:first-child,
  .section-content > *:last-child {
    flex: 0 0 auto;
  }
  
  .step {
    min-width: 85vw;
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-h1: 32px;
    --font-size-h2: 28px;
    --font-size-h3: 22px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
  }
  
  .header-content {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .nav {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .nav-links {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
  }
  
  .footer-content {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
  
  .footer-links {
    flex-direction: column;
    align-items: center;
  }
  
  .comparison-table {
    font-size: var(--font-size-small);
  }
  
  .comparison-table th,
  .comparison-table td {
    padding: var(--spacing-sm);
  }
}